"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.18414
        63,   55.00887
       125,   46.49244
       250,   45.94807
       500,   57.05987
      1000,   74.63527
      2000,   45.18315
      4000,    32.8297
      8000,   24.82458
     16000,   19.09013